CN110383726A - MCS for long LDPC code - Google Patents
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0006—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission format
- H04L1/0007—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission format by modifying the frame length
- H04L1/0008—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission format by modifying the frame length by supplementing frame payload, e.g. with padding bits
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
- H03M13/03—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words
- H03M13/05—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words using block codes, i.e. a predetermined number of check bits joined to a predetermined number of information bits
- H03M13/11—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words using block codes, i.e. a predetermined number of check bits joined to a predetermined number of information bits using multiple parity bits
- H03M13/1102—Codes on graphs and decoding on graphs, e.g. low-density parity check [LDPC] codes
- H03M13/1148—Structural properties of the code parity-check or generator matrix
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
- H03M13/29—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes combining two or more codes or code structures, e.g. product codes, generalised product codes, concatenated codes, inner and outer codes
- H03M13/2906—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes combining two or more codes or code structures, e.g. product codes, generalised product codes, concatenated codes, inner and outer codes using block codes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0041—Arrangements at the transmitter end
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0057—Block codes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0061—Error detection codes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
- H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
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- Mathematical Physics (AREA)
- Error Detection And Correction (AREA)
- Detection And Prevention Of Errors In Transmission (AREA)
Abstract
It discloses for utilizing LDPC matrix to source word coding and to the method and apparatus of codeword decoding.Describe the modulation for the LDPC code word of 1/2 length 1344 of generating rate and the example embodiment of encoding scheme (modulation and coding scheme, MCS).
Description
Technical field
This application involves mobile air interface technologies, more particularly to examine (low with long binary low density parity school
Density parity check, LDPC) modulation that is used together of code and encoding scheme (modulation and coding
scheme,MCS)。
Background technique
LDPC encoder at transmitter is for encoding source word to generate code word.LDPC decoder at receiver is for solving
The received code word of code institute.The LDPC code of various rates uses in IEEE 802.11ad standard, and at present for exploitation
IEEE 802.11ay standard propose.In " IEEE 802.11-16/0676-01-00`Length-1344-LDPC-codes-
The long LDPC code that codeword size is 1344 is proposed in for-11ay ', 2016-05-17 " [REF 1].
However, using longer LDPC code word length can influence during the coding of the LDPC at transmitter the modulation that uses and
Correspondence decoding process at encoding scheme (MCS) and receiver.Therefore, the change of LDPC code word length may need to modify use
In the MCS for generating LDPC code word." ieee standard 802.11ad-2012: the enhancing of high throughput in revision 3:60GHz frequency range "
The 21.6.3.2.3.3 section of [REF 2] describes the encoding scheme being used together with short LDPC code (size=672).So
And this scheme may be not suitable for long LDPC code, such as the LDPC code with 1344 bit word sizes.
Therefore, it is necessary to a kind of MCS suitable for long LDPC code.
Summary of the invention
It describes real for the modulation of the LDPC code word of 1/2 length 1344 of generating rate and the example of encoding scheme (MCS)
Apply example.
According to exemplary aspect, method of a kind of pair of source word coding to be transmitted is provided, comprising: be segmented data bit stream
For the section of 336 sizes；336 fillers are added to the section of each 336 sizes, to generate the source of corresponding 672 sizes
Word；The source word of each 672 sizes is encoded using 1/2 rate low-density parity-check inspection LDPC, includes 672 odd evens to generate
The code word of corresponding 1344 sizes of check bit；For each code word, which is replaced with and is wrapped from the code word
Obtain 336 of the data bit included, to provide the code word of 1344 sizes, the code word of 1344 sizes includes this 336
The splicing of data bit, 336 and 672 parity bits obtained from the data bit.
The data bit stream can have a scrambling, and this method may include: by LDPC coding application in 672 sizes
Source word before, 336 fillers in the source word of 672 sizes are scrambled.In some instances, the filler
It is zero-bit.In some instances, by low LDPC coding application in each 672 sizes source word include apply in " IEEE
802.11-16/0676-01-00`Length-1344-LDPC-codes-for-11ay ', rate specified in 2016-05-17 "
The LDPC matrix of 1/2 length 1134.In some instances, replace 336 fillers include with the position from PN sequence into
Data bit after row exclusive or replaces each filler.In some instances, which is mapped to BPSK symbol.Show some
In example, which is grouped into data block or orthogonal frequency division multiplexing (orthogonal frequency division
Multiplexing, OFDM) symbolic blocks, and the data block or OFDM symbol block are assembled into 802.11ay compliant frame, to divide
It is not transmitted using single carrier wave or OFDM.
According to example embodiment, a kind of system for encoding source word to be transmitted is provided, comprising: segmentation mould
Block is configured as: data bit stream is segmented into the section of 336 sizes；336 fillers are added to the section of each 336 sizes,
To generate the source word of corresponding 672 sizes.The system includes: low-density parity-check inspection LDPC coding module, is configured as: right
The source word of each 672 sizes is encoded, to generate the code of corresponding 1344 sizes including 672 parity check bits
Word；And for each code word, which is replaced with into 336 that the data bit for including from the code word obtains,
With provide 1344 sizes code word, the code word of 1344 sizes include 336 data bit, obtained from the data bit should
The splicing of 336 and 672 parity check bits.
Detailed description of the invention
Reference by way of example is shown to the attached drawing of the example embodiment of the application now, and wherein:
Figure 1A is to show the block diagram of example communication system in accordance with one embodiment of the present disclosure；
Figure 1B is to show the block diagram of exemplary processing system in accordance with one embodiment of the present disclosure；
Fig. 2A is the schematic diagram for showing the example single carrier frame format of 802.11ad；
Fig. 2 B is the schematic diagram for showing the exemplary construction of the data block of single carrier frame format of 802.11ad；
Fig. 3 A is the block diagram for indicating the example embodiment of transmitter of the disclosure；
Fig. 3 B is the block diagram of the exemplary step in the method for the information bit stream for showing the processing disclosure；
Fig. 4 is the block diagram for indicating scrambler；And
Fig. 5 shows that lifting matrixes and code word size specified in IEEE802.11ad are 672 rate 1/2LDPC code.
All attached drawings make that similar element and feature are denoted by the same reference numerals.Although illustrated embodiment will be combined
Each aspect of the present invention is described, it should be appreciated that, it is not intended to limit the invention to these embodiments.
Specific embodiment
Disclosure introduction is method, apparatus and system, especially a kind of modulation and encoding scheme, for compiling to source word
Code, to generate the transmission in wireless network in such as WLAN (wireless local area network, WLAN)
Code word.Although relating generally to 802.11ay compatible network below to be described, the disclosure can also be based on applied to other
The system of block encoding.
There is provided reference Figure 1A and 1B to LDPC coded system can be in the example of the environment wherein operated, LDPC coding system
System will be discussed in more detail below.Figure 1A show including multiple station (station, STA) 102 and access point (access point,
AP) 104 communication network 100.Each of STA 102 and AP 104 may include transmitter described herein, receiver,
Encoder and/or decoder.Network 100 can be operated according to one or more communication or data standard or technology, including but
Be not limited to 802.11 network of IEEE, the 5th generation (fifth generation, 5G) or forth generation (fourth generation,
4G) telecommunication network, long term evolution (Long-Term Evolution, LTE), third generation partnership relation project (3rd
Generation Partnership Project, 3GPP), Universal Mobile Telecommunications System (Universal Mobile
Telecommunications System, UMTS) and other wireless or mobile communications networks.Network 100 may, for example, be wirelessly
Local area network (WLAN).STA 102, which usually can be, is capable of providing wireless communication or any equipment using 802.11 agreements.STA
102 can be laptop, Desktop PC, PDA, access point or Wi-Fi phone, wireless transmitter/receiver unit (wireless
Transmit/receive unit, WTRU), mobile station (mobile station, MS), mobile terminal, smart phone, honeycomb
Phone or other wireless computings or mobile device.In some embodiments, STA 102 includes having the ability in a communication network 100
The machine of the major function and non-communicating that send, receive or send and receive data, but execute.In one embodiment, one
The device or equipment that kind machine includes, which have, passes through the unit that communication network 100 emits and/or receive data, but this device
Or equipment is mainly used for communication objective usually not by user's operation.AP 104 may include base station (BS), evolution node B
(evolved Node B, eNB), wireless router or other network interfaces are used as the wireless of the STA 102 in network 100
It transfers and/or receives a little.AP 104 is connected to backhaul network 110, makes it possible in AP 104 and other telecommunication networks, section
The swapping data of point, AP and equipment (not shown).AP 104 can be by establishing uplink and downlink with each STA 102
Link communications channel supports the communication with each STA 102, as shown in the arrow in Figure 1A.Communication in network 100 can be with
Be it is non-scheduled, by AP 104 or by network 100 scheduling or management entity (not shown) scheduling or be scheduling and it is non-
The mixing of dispatching communication.
Figure 1B shows exemplary processing system 150, can be used for implementing method described herein and system, such as STA
102 or AP 104.Processing system 150 can be such as base station, wireless router, mobile device or any suitable processing system
System.Other processing systems for being adapted for carrying out the disclosure can be used comprising component can be with difference discussed below.To the greatest extent
Pipe Figure 1B shows the single instance of each component, but each of processing system 150 part may exist multiple examples.
Processing system 150 may include one or more processing equipments 152, such as processor, microprocessor, dedicated integrated
Circuit (application-specific integrated circuit, ASIC), field programmable gate array (field-
Programmable gate array, FPGA), dedicated logic circuit or combinations thereof.Processing system 150 can also include one
Or multiple input/output (I/O) interfaces 154, it can be implemented and one or more input equipments appropriate and/or output equipment
The interface of (not shown) connects.One or more of input equipment and/or output equipment can be included as processing system
150 component, or can be in the outside of processing system 150.Processing system 150 may include for wired or wireless with network
One or more network interfaces 158 of communication, such as, but not limited to Intranet, internet, P2P network, WAN, LAN, WLAN and/
Or honeycomb or mobile communications network, such as 5G, 4G, LTE or other networks as described above.Network interface 208 may include using
In in network and/or the wire link of inter-net communication (for example, Ethernet cable) and/or Radio Link are (for example, one or more
A radio frequency link).For example, network interface 158 can be via one or more transmitters or transmitting antenna, one or more receptions
Device or receiving antenna and various signal processing hardware and softwares provide wireless communication.In this example, single day is shown
Line 160 may be used as transmitting and receiving antenna.It is independent there may be for transmitting and receiving however, in other examples
Antenna.Network interface 158 can be configured for other users equipment into backhaul network 110 or network 100, access point,
Receiving point, transfer point, network node, gateway or relaying (not shown) send and receive data.
Processing system 150 can also include one or more storage units 170, may include massive store unit,
Such as solid state drive, hard disk drive, disc driver and/or CD drive.Processing system 150 may include one or
Multiple memories 172 may include volatibility or nonvolatile memory (for example, flash memory, random access memory
(random access memory, RAM) and/or read-only memory (read-only memory, ROM)).Non-transitory storage
Device 172 can store the instruction for being executed by processing equipment 152, to execute the disclosure.Memory 172 may include other
Software instruction, such as implementing operating system and other applications/function.In some instances, one or more data
Collection and/or module can be by external memory (for example, the peripheral drivers for carrying out wired or wireless communication with processing system 150)
It provides, or can be provided by temporary or non-temporary property computer-readable medium.The example of non-transitory computer-readable medium
Including RAM, ROM, erasable programmable ROM (erasable programmable ROM, EPROM), electrically erasable
ROM (electrically erasable programmable ROM, EEPROM), flash memory, CD-ROM or other portables
Reservoir.
In the exemplary embodiment, processing system 150 includes: encoder 162, for source word to be encoded to code word；And it adjusts
Device 164 processed, for code word to be modulated to symbol.As described below, encoder 162 executes LDPC coding to source word to generate code word
Position.Modulator 164 executes modulation (for example, the modulation technique for passing through such as BPSK, QPSK, 16QAM or 64QAM) to code word.?
In some examples, the instruction write in memory 172 can configure processing equipment 152 to execute encoder 162 and/or adjust
The function of device 164 processed, so that encoder 162 and/or modulator 164 can not be different physical modules in processing system 150.
In some instances, encoder 162 and modulator 164 can be implemented in the transmitter module of processing system 150.Show some
In example, transmitting antenna 160, encoder 162 and modulator 164 may be implemented as the component outside transmitter processing system 150,
And source word simply only can be transmitted from processing system 150.
Processing system 150 may include demodulator 180 and decoder 190, receive signal for handling.Demodulator 180 can
To execute demodulation to received modulated signal (for example, BPSK, QPSK, 16QAM or 64QAM signal).Then, decoder 190 can
It include the original signal received in signal to restore to execute decoding appropriate to demodulated signal.In some instances,
The instruction write in memory 172 can configure processing equipment 152 to execute the function of demodulator 180 and/or decoder 190
Can, so that demodulator 180 and/or decoder 190 can not be different physical modules in processing system 150.In some examples
In, demodulator 180 and decoder 190 can be implemented in the receiver module in processing system 150.In some instances, it connects
Receiving antenna 160, demodulator 180 and decoder 190 may be embodied as external receiver assembly, and can only simply will
Processing system 150 is transmitted to from the signal that signal decodes is received.
Between the component of processing system 150, there may be the buses 192 of offer communication, including processing equipment 152, I/O to connect
Mouth 154, network interface 158, encoder 162, modulator 164, storage unit 170, memory 172, demodulator 180 and decoder
190.Bus 192 can be any suitable bus architecture, including such as memory bus, peripheral bus or video bus.
(LDPC) coding techniques can be examined by using low-density parity-check to encode the source word to be sent, and/or
By to using the received code word of LDPC code decoding technique to be decoded, to realize the STA 102 and AP 104 in network 100
Between communication.After being encoded using LDPC coding techniques to source word, when the code word of coding is from AP 104 to STA
102 or when sending in 104 signal from STA 102 to AP, the LDPC encoded information of the signal of transmission may include being sent
Frame in.After STA 102 or AP 104 receive the signal of transmission, using receive signal in LDPC encoded information,
STA102 or AP 104 may be selected by LDPC decoding technique appropriate to decode received signal.
Fig. 2A shows the example lattice of single carrier (single carrier, SC) frame 201 according to IEEE 802.11ad
Formula can be used for the signal exchanged between AP 104 and STA 102 in example embodiment.SC frame 201 is practised handwriting including short training
Section (short training field, STF), channel estimation (channel estimation, CE) field, PHY header, SC number
According to block (block, BLK) and optionally in wave beam forming training automatic growth control (automatic gain control,
AGC) subfield and TRN-R/T subfield.The frame may include multiple SC data block BLK, as shown in Figure 2 A.
Fig. 2 B shows the exemplary construction of the SC data block BLK according to 802.11ad standard, can be in example embodiment
Middle use.In fig. 2b, each SC data block BLK is made of DATA_BLK=448 symbol.Between the adjacent BLK of every two
The role of the cycle period between adjacent data blocks is served as using GI=64 protection intervals (guard interval, GI),
To allow SC receiver to execute frequency domain equalization.In 802.11ay, channel bonding can be supported, the number of channel is indicated by NCB, data
Block size is then correspondingly modified.Therefore, in the exemplary embodiment, 1) other alternate data blocks and protection interval size include:
DATA_BLK=448*NCB, GI=64*NCB, wherein 2≤NCB≤N；N >=2) DATA_BLK=480*NCB, GI=32*NCB,
Wherein 1≤NCB≤N, N >=1；And 3) DATA_BLK=384*NCB, GI=128*NCB, wherein 1≤NCB≤N, N >=1.
Fig. 2A indicates the example embodiment of the transmitter 300 of STA 102 or AP 104.In the exemplary embodiment, emit
Device 300 exports SC data frame 201.Such as defined in IEEE802.11ad standard, the PHY header of SC frame 201 includes 5 MCS
Field, mark are applied to the MCS of the SC data block BLK in SC frame 201 included.Specifically, MCS field is modulation and coding staff
The index of case table identifies one group of parameter associated with the index value for being applied to scheduled modulation and encoding scheme.?
In IEEE 802.11ad standard, MCS index " 1 " (referred to as MCS 1) specifies following MCS parameter: modulation: n/2-BPSK；NCBPS=
1；Repeat=2；Code rate=1/2；With data rate (Mbps)=385.Each parameter is specified according to scheduled LDPC cataloged procedure
, process regulation in the 21.6.3.2.3.3 section [REF 2] of IEEE 802.11ad standard.As described above, IEEE
802.11ad standard provides 672 1/2 rate codeword sizes.
Correspondingly, this document describes the example embodiments for replacing MCS 1, and it is suitable for having 1344 bit word sizes
1/2 rate LPDC, in the context of LDPC code, such as in " IEEE 802.11-16/0676-01-00`Length-
Described in 1344-LDPC-codes-for-11ay ', 2016-05-17 " [REF 1].
Retouching the MCS for the SC data block BLK being applied in SC frame 201 in the described in the text up and down of Fig. 3 A and 3B now
It states.As shown in Figure 3A, the transmitter 300 implemented by processing system 150 include source word segmentation module 202, LDPC encoder 162,
Symbol mapping modulator 164 and grouping module 208 are arrived in position.In the exemplary embodiment, the report of the frame 201 sent from transmitter 300
The MCS parameter that corresponding MCS table clause is included by the MCS index value in head are as follows: modulation: n/2-BPSK；NCBPS=1；Repeat=
2；Code rate=1/2；With data rate (Mbps)=385.
Fig. 3 B shows the exemplary step that input information bit stream is handled by transmitter.
In the exemplary embodiment, scramble information or data bit, the module are received in the steam at source word segmentation module 202
For data bit to be segmented into source wordEach with k=672 sizes.In the exemplary embodiment, MCS repetition factor is
2, indicate each source wordBy two versions including input data position, and therefore, segmentation module 202 executes following movement
(referring to Fig. 3 B) is to generate source word(1) input scrambled data position is segmented, and includes k/2=336 scrambled data position to provide
(b1,b2,...,b336) segmentation (step 320)；And (2) K/2=336 fills " zero " position (01,02,...,0336) and 336
Scrambled data position is connected to fill most k (steps 322), to generate 672 source words
(step 326).
The source word of each k=672From 1 × k row vector or one-dimensional two into
1 × k of number processed.To k=672 source words at LDPC encoder 162It is encoded, to be generated accordingly by LDPC encoder 162
N=1344 bit word(step 224).Particularly, each source word672
The position data bit block of size and the parity bit block (p of filler block and n-k=672 sizes1,p2,...,p672) splice to generate n
The code word of=1344 sizesSo thatWherein
H is (n-k) × n parity checking matrix.
In the exemplary embodiment, parity checking matrix H is used in " IEEE 802.11-16/0676-01-00`Length-
The LDPC matrix of 1/2 length 1134 of rate specified in 1344-LDPC-codes-for-11ay ', 2016-05-17 " [REF 1]
Form.In this respect, with reference to Fig. 5, parity checking matrix H is that 672 rows multiply 1344 column matrix, by by lifting matrixes 592
It is obtained applied to basic matrix 504, is code rate=1/2 specified in IEEE 802.11ad [REF2], codeword size=
672 LDPC matrixes.In basic matrix 504, for element i each in table, if comprising value be not " -1 ", be that size is
The recognition matrix P of Z × ZiCycle arrangement matrix Pi, wherein Z=42, and " -1 " entry representation size is the null matrix of Z × Z.
The code word of n=1344 size after coding
Further operating is undergone at LDPC encoder 162, wherein k/2=336 filling zero-bit (01,02,...,0336) by by different
Data bit after or replaces (step 328).Specifically, 336 original scrambled data position (b1,b2,...,b336) and 336 sizes
Pseudo random number (pseudorandom number, PN) sequence carry out exclusive or, to generate PN sequence xor data position (b'1,b
'2,...,b'336) 336 blocks.In this respect, Fig. 4 is shown using linear feedback shift register (linear
Feedback shift register, LFSR) and XOR operation implement scrambler 402 example.PN sequence can for example from
The LFSR of scrambler 402 is generated, and wherein LSFR is initialized to complete 1 vector, and is reinitialized to after each code word
The same vector.After the zero-bit with the data bit replacement filling by XOR, LDPC encoder exports the code of 1344 sizes
WordIt includes 336 scrambled data positions, 336 and PN sequence
Scrambled data position and 672 parity checking positions after column exclusive or.
Then, the code word after codingSymbol (step 330) is modulated to at symbol mapping modulator 164 in place.?
In example embodiment, the modulation of pi/2 BPSK specified in 802.11ad is applied.In BPSK modulation, binary digit is simply reflected
It penetrates as bipolar { -1,1 } symbol.Multiple symbols can be grouped into modulation code word.For example, modulation code word may include 1344
BPSK modulation symbol.Modulation code word can be further assembled into data block of a size suitable in grouping module 208
(block, BLK) (step 332).In one embodiment, the data block BLK of each assembling includes 448 symbols.It then can be with
Data block BLK is assembled into framing 201, frame 201 is IEEE 802.11ay SC compliant frame in some instances, and is modulated onto
To be transferred to the receiver with corresponding decoding ability in single carrier wave.
In some instances, grouping module 208 is configured as orthogonal frequency division multiplexing (OFDM) being applied to BPSK modulation symbol
Number with export can be assembled into IEEE 802.11ay OFDM complain frame OFDM symbol block.
Therefore, the 1/2 rate LDPC code that above-mentioned MCS is 1344 using size provides properly for 802.11ay MCS 1
Cataloged procedure.In example modelled, with the LDPC code phase for MCS 1 specified in 802.11ad using 1/2 size 672 of rate
Than observing the performance gain of highest 0.5dB.
Present disclose provides for realizing exemplary certain exemplary algorithms of disclosed method and system and calculating.So
And the disclosure is not limited to any special algorithm or calculating.Although the disclosure with the step of particular order describe method and
Process, but can suitably omit or change the one or more steps of method and process.In appropriate circumstances, one or
Multiple steps can be occurred with being different from described sequence.
By the description of previous embodiment, the present invention can be by being used only hardware or by using software and necessity
General hardware platform or realized by the combination of hardware and software.Based on this understanding, technical solution of the present invention
It can embody in the form of software products.The software product can store in non-volatile or non-transitory storage medium, should
Storage medium can be compact disc read-only memory (compact disk read-only memory, CD-ROM), USB flash memory drives
Dynamic device or hard disk.The software product includes many instructions, these instructions make computer equipment (personal computer, server or net
Network equipment) method provided in the embodiment of the present invention is provided.
10056 although the present invention and its advantages have been described in detail, it should be appreciated that, it is not departing from by appended claims
In the case where the present invention of restriction, various changes, replacement and change can be carried out.
In addition, scope of the present application be not intended to be limited to process, machine described in specification, manufacture, material composition,
The specific embodiment of device, method and steps.The disclosure of those skilled in the art through the invention will readily appreciate that, root
According to the present invention, using there is currently or in the future by the execution of exploitation function substantially the same with corresponding embodiment described herein
It can or realize process, machine, manufacture, material composition, device, the method or step of result substantially the same with its.Therefore, appended
Claim is intended within its scope include such process, machine, manufacture, material composition, device, method or step.
Claims (18)
1. a kind of method for encoding source word to be transmitted, comprising:
Data bit stream is segmented into the section of 336 sizes；
336 fillers are added to the section of each 336 sizes, to generate the source word of corresponding 672 sizes；
The source word of each 672 sizes is encoded using 1/2 rate low-density parity-check inspection LDPC, includes 672 surprises to generate
The code word of corresponding 1344 sizes of even parity bit；
For each code word, 336 fillers are replaced with into 336 that the data bit for including from the code word obtains
Position, to provide the code word of 1344 sizes, the code word of 1344 sizes includes 336 data bit, from the data
The splicing for 336 and 672 parity check bits that position obtains.
2. according to the method described in claim 1, wherein the data bit stream is scrambled.
3. method according to any one of claim 1 to 2, wherein the filler is zero-bit.
4. according to the method in any one of claims 1 to 3, wherein by LDPC coding application in each 672 sizes
Source word include apply " IEEE 802.11-16/0676-01-00 ' Length-1344-LDPC-codes-for-11ay ',
The LDPC matrix of 1/2 length 1134 of rate specified in 2016-05-17 ".
5. method according to claim 1 to 4, wherein replace 336 fillers include: with come from
The position of PN sequence carries out the data bit after exclusive or to replace each filler.
6. the method according to any one of claims 1 to 5, including the code word is mapped to BPSK symbol.
7. according to the method described in claim 6, including that the BPSK symbol is grouped into data block, and by the data chunk
Dress up the 802.11ay compliant frame for single carrier transmission.
8. according to the method described in claim 6, further include: by the BPSK symbol-modulated at the orthogonal frequency for being used for OFDM transmission
Divide multiplexing OFDM symbol block.
9. a kind of system for encoding source word to be transmitted, comprising:
Segmentation module is configured as: data bit stream is segmented into the section of 336 sizes；And
336 fillers are added to the section of each 336 sizes, to generate the source word of corresponding 672 sizes；
Low-density parity-check examines LDPC coding module, is configured as: encoding to the source word of each 672 sizes, to generate
The code word of corresponding 1344 sizes including 672 parity check bits；And
For each code word, 336 fillers are replaced with into 336 that the data bit for including from the code word obtains
Position, to provide the code word of 1344 sizes, the code word of 1344 sizes includes 336 data bit, from the data
The splicing for 336 and 672 parity check bits that position obtains.
10. system according to claim 9, wherein the data bit stream is scrambled.
11. system according to claim 9 or 10, wherein the filler is zero-bit.
12. the system according to any one of claim 9 to 11, wherein the LDPC coding module is configured to apply
" regulation in IEEE 802.11-16/0676-01-00 ' Length-1344-LDPC-codes-for-11ay ', 2016-05-17 "
1/2 length 1134 of rate LDPC matrix.
13. the system according to any one of claim 9 to 12, wherein the LDPC coding module is configured as passing through
With with from the position of PN sequence carry out exclusive or after data bit replace each filler, to replace 336 fillers.
14. the system according to any one of claim 9 to 13, the system comprises: symbol mapping block, the symbol
Mapping block is configured as the code word being mapped to BPSK symbol.
15. system described in claim 14, the system comprises grouping module, the grouping module is configured as will be described
BPSK symbol is grouped into data block, and the data chunk is dressed up to the 802.11ay compliant frame for being used for single carrier transmission.
16. system according to claim 14, the system comprises grouping module, the grouping module is configured as institute
BPSK symbol-modulated is stated into the orthogonal frequency division multiplex OFDM symbolic blocks for OFDM transmission.
17. the system according to any one of claim 9 to 16, wherein the system is in local wireless area network insertion
Implement in point.
18. the system according to any one of claim 9 to 16, wherein the system is implemented in mobile radio station.
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| PCT/CN2017/076042 WO2018161290A1 (en) | 2017-03-09 | 2017-03-09 | Mcs for long ldpc codes |
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| KR102403066B1 (en) * | 2017-08-22 | 2022-05-27 | 삼성전자주식회사 | Channel Encoding/Decoding Method Using Zero Bit Padding and Apparatus thereof |
| KR102229453B1 (en) * | 2017-11-24 | 2021-03-17 | 주식회사 엘지화학 | A carbon -surfur complex, manufacturing method thereof and lithium secondary battery comprising the same |
| US20220131641A1 (en) * | 2019-03-11 | 2022-04-28 | Lg Electronics Inc. | Method and device for performing harq operation |
| JP6821231B1 (en) * | 2020-05-30 | 2021-01-27 | 公立大学法人公立諏訪東京理科大学 | Wireless transmission method |
| WO2023090480A1 (en) * | 2021-11-18 | 2023-05-25 | 엘지전자 주식회사 | Method and apparatus for transmitting/receiving wireless signal in wireless communication system |
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| WO2018161290A1 (en) | 2018-09-13 |
| JP2020515133A (en) | 2020-05-21 |
| EP3580865A4 (en) | 2020-02-19 |
| RU2725430C1 (en) | 2020-07-02 |
| KR20190119145A (en) | 2019-10-21 |
| US10868636B2 (en) | 2020-12-15 |
| ES2901073T3 (en) | 2022-03-21 |
| US20190393977A1 (en) | 2019-12-26 |
| KR102256656B1 (en) | 2021-05-25 |
| EP3580865A1 (en) | 2019-12-18 |
| EP3580865B1 (en) | 2021-11-24 |
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